GB602625A - Improvements in or relating to devices for the selective opening of electric circuit-breakers protecting installations - Google Patents
Improvements in or relating to devices for the selective opening of electric circuit-breakers protecting installationsInfo
- Publication number
- GB602625A GB602625A GB24764/45A GB2476445A GB602625A GB 602625 A GB602625 A GB 602625A GB 24764/45 A GB24764/45 A GB 24764/45A GB 2476445 A GB2476445 A GB 2476445A GB 602625 A GB602625 A GB 602625A
- Authority
- GB
- United Kingdom
- Prior art keywords
- breaker
- circuit
- branch
- branch circuit
- general
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/021—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1081—Modifications for selective or back-up protection; Correlation between feeder and branch circuit breaker
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/063—Details concerning the co-operation of many similar arrangements, e.g. in a network
Landscapes
- Fuses (AREA)
- Breakers (AREA)
Abstract
602,625. Protective cut-out systems. THEUNISSEN, F. J. M. Sept. 24, 1945, No. 24764. Convention date, Jan. 25, 1944. [Class 38 (v)] A protective system comprises a general circuit-breaker 1, 2, mechanically connected to a number of branch circuit-breakers a, b, &c., so that upon a heavy overload, or a shortcircuit on a branch circuit, the corresponding branch circuit-breaker only opens after the general circuit-breaker has opened. Upon overload, the contact lever 3 is moved by the coil 9 counter-clockwise about pivot 4 to open contacts 1, 2, so allowing spring 12 to rotate a bar 11 about pivot 22. Meanwhile, the lever 13 of the circuit-breaker of the faulty branch is moved up by the branch coil 17, so that the lever 13 and the bar 11 co-operate to cause latch 14 to trip. the branch circuit-breaker. A ratchet 7 engages the end 6 of lever 3, the return of which, under the action of spring 10, is retarded by a dashpot 8, until released by a nose 5, to ensure that the general circuitbreaker does not reclose before the branch circuit-breaker opens. Alternatively, the inertia of the general circuit-breaker may be relied on to.produce this delay. A limiting resistance R may be connected across the contacts 1, 2, to maintain the supply to the other circuits. Overloads within the capacity of the branch circuit-breakers are disconnected by thermal devices acting on the latches 14. The Specification refers also to reclosure of the general circuit-breaker by the opening movement of the branch circuit-breaker.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE249242X | 1944-01-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB602625A true GB602625A (en) | 1948-05-31 |
Family
ID=3866537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24764/45A Expired GB602625A (en) | 1944-01-25 | 1945-09-24 | Improvements in or relating to devices for the selective opening of electric circuit-breakers protecting installations |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2551304A (en) |
| BE (1) | BE454099A (en) |
| CH (1) | CH249242A (en) |
| FR (1) | FR911145A (en) |
| GB (1) | GB602625A (en) |
| NL (1) | NL60797C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL124717C (en) * | 1959-04-07 | |||
| NL9102057A (en) * | 1991-12-10 | 1993-07-01 | Holec Syst & Componenten | SELECTIVE AUTOMATIC PROTECTION SWITCH. |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US961164A (en) * | 1907-06-25 | 1910-06-14 | Rothwell S Patents Syndicate | Circuit-controller. |
| US957334A (en) * | 1909-07-01 | 1910-05-10 | Cutler Hammer Mfg Co | Circuit-breaker. |
| US1159936A (en) * | 1910-09-06 | 1915-11-09 | Westinghouse Electric & Mfg Co | System of electrical distribution. |
| US1717260A (en) * | 1921-09-14 | 1929-06-11 | Gen Electric | Circuit interrupter |
-
0
- BE BE454099D patent/BE454099A/xx unknown
- NL NL60797D patent/NL60797C/xx active
-
1945
- 1945-05-28 FR FR911145D patent/FR911145A/en not_active Expired
- 1945-07-09 CH CH249242D patent/CH249242A/en unknown
- 1945-09-24 GB GB24764/45A patent/GB602625A/en not_active Expired
- 1945-12-03 US US632443A patent/US2551304A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| BE454099A (en) | |
| FR911145A (en) | 1946-06-28 |
| CH249242A (en) | 1947-06-15 |
| NL60797C (en) | |
| US2551304A (en) | 1951-05-01 |
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